Summary statistics for study sets for birth weight and 7-year WISC IQ
| Analysis of birth weight (n=1312) | Analysis of 7-year WISC IQ (n=767) | |||
| Variable | Mean | SD | Mean | SD |
| WISC IQ | 100.0 | 12.8 | ||
| Birth weight (g) | 3630.6 | 547 | ||
| My Nutrition Index (MNI) | 66.6 | 15 | 67.4 | 14 |
| Maternal weight (kg) | 69.0 | 13 | 69.0 | 13 |
| Maternal IQ | 114 | 16 | ||
| Total calories | 1892 | 548 | 1894 | 532 |
| Log10 BPF (ng/ml) | −0.48 | 0.51 | ||
| Log10 PFOS (ng/ml) | 0.82 | 0.19 | ||
| Variable | Percent | Percent |
| Child (female) | 48 | 50 |
| Maternal smoker | 12 | 10 |
| Premature birth | 4 | 4 |
| Maternal higher education | 63 | 69 |
BSF, bisphenol F; PFOS, perfluoro-octanesulfonic acid; WISC, Wechsler Intelligence Scale for Children.